Door-locking device.



P'. F. FOLEY.

DOOR LOCKING DEVICE. Amlcmon FILED nic. n. 191e.

Petented Feb. 27,191?.

ZvSHEETS-SHEET l.

P. F. FOLEY.

DOOR LOCKING DEVICE.

AP-PLlcATmN FILED nec. n, 191e.

2 SHEETS-SHEET 2.

1,21*?,586 Patented Feb.27,1917.

PATRICK F. FOLEY,

BROOKLYN, NEW YORK.

Doon-LOCKING DEVICE.

Specicationof Letters Patent. Patente-(1 Feb, 27, 1917.

Application led December 11,1916. -Seria1No. 136,140.

To all lwhom 'it may concer/n:

Be it known that I, PATRICKYF. FOLEY, a citizen of .the United States, and resident of the borough of Brooklyn, county of. city and State off New York, have locking devices which may be used with good results in connection with elevator door locking and controlling apparatus,

such as is covered by my Patent 1,181,217

of May 2, 1916. The locking. device may comprise an angular `slotted door catch adapted to copeiate with a locking rollor' member mounted, for instance, on the jarnb of the door, so that when the doorV is closed the locking member entersthe slotted catch and forces this member and a connected locking bolt transversely through the distance controlled by the closing movement of the door. A detent coperates with the lockpogsition so thatthe door is prevented from opening even though it has not completely closed, and'this is of course a decided advantage, especially in the case of elevator doors. A cushioning device is preferably` associated with the locking bolt so-as. to cushion the closing action of the door and correspondingly minimize jar andnoise.

ln the accompanying drawing showing inl a somewhat diagrammatic way illustrative' embodiments of this. invention Figure lis a vertical section through an elevator door locking device.

Fig.

Fig. 1.

Fig. 3 is a sectional elevation 'of a modifie cation adapted for use on ordinaryn swinging doors; and v Fig, 4 is a side sectional view thereof.

-The elevator door locking device may cooperate, for instance, with an elevator shaft such as the horizontal slidingy door '55, mounted on hangers engaging the track 99 of any f suitable construction so as to slide back and forth thereon.' The coperating door locking devices which may with advantage be mounted on the upper end of the door and the co` bolt so as to hold it in any such locked- 2 is a transverse section thereofI .taken substantially along the line 2-2- of operating d oor casing 98 as shown in greater detail in Fig. 1 may comprise an angularly arranged door catch 'of any desired descripmember which preferably is spring pressed orv otherwise normally held inposition to receive the catch as thedoor closes, a cushtion coperating with a suitable locking 1 srariis rarnivrornionf ioning device being, if desired, associated.'

with the locking member so as to cushion .the closing action of the door and minimize )ar and noise, While at thel same time the door is locked against withdrawal as soon as the angular catch and locking member engage.

The catch 62 may as indicated in Fig. 1 be provided with an angularly arranged slot- 56 and may be mounted either on the dooror casing, although a's shownit is bolted or otherwise secured adjacent thefupper end of the door 55. The coperating locking member may be in the form of a locking roll 57 mounted on the locking slide or bolt 66 mounted in suitable guides, such as 73,

in a lock-casing 28, which may be bolted-or otherwise secured, to ythe elevator shaft y,ad-

jacent the door opening. This'locking bolt may be provided with a suitable cushioning devicevas 69 onA the end of the stem 68 of the bolt and providing a copeiating cushioning cylinder 71' in which this plunger `fits with sulficient tightness and which maybe filled vwith any suitable cushioning fluid 72, such as oil,

glycerin oiairin some cases. One ,or more restricted throttling' passages, 'such as 70, lmay be formed in this plunger to allow'the passage ofthe cushioning fluid therethrough and give the desiredcushioning action, the l size or number of these passagesbeing of course selected or controlled for this purpose. It is in some cases desirable Vto-provide a quick return valve of any suitable description in this plunger or in connection therewith, such as .the valve 102, normally held by its coperating spring 103 over-the enlarged return but adapted to open and allow the freer'passage of the cushioning fluidas the locking boltimoves upward. It is desirable to have this locking bolt returned by any suitable means, suchvasthe return spring 67to itsmay be .used

by forming a cushioning. plunger l 10o passage 101 in the plunger,

gli?

to adjust this normal receiving position of the locking bolt after the parts have been assembled.

Any suitable detent device may be .used in connection with the locking bolt to hold it in locking position after it has been moved downward more or less by engagement with the catch, 'audit' desired a toothed detent may be mounted in any desired way adjacent the bolt so as to cooperate with the series of ratchet teeth 74; on the bolt. This detent may be mounted on the detent bar NS carried in suitable sliding bearings or yokes 78 mounted in the lock casing and prefer ably formed with means to prevent its undesirable rotation which may bc conveniently effected by forming one/end ot' the detent bar 100 of square or polygonal crosssection. rll`he detent spring 79 may normally force the detent into holding engagement with-the ratchet on the locking bolt as by engaging a washer 80 cooperating with a collar 8l secured to the detent bar.

ln this way when the shaft door is closed the slotted door catch engages the locking roll during the last few inches of the d oors travel and forces the roll and connected locking bolt downwardl` the ratchet teeth slipping past the detent, but preventing any backward movement so that the door catch is locked against retraction as soonns any substantial engagement with the locking member takes place. At the same time the closing movement of the door is retarded or cushioned as soon as the catch and locking member engage7 by the cushioning plunger and cylinder described and also by the return spring 67 which resists this movement, so that under normal conditions the closing impact of the door is considerably reduced and the door is elfectively held in closed or substantially clf'sed position because the locking bolt holds ust as effectively whether the roll has entirely7 or partly7 reached the end of the slot 56. The locking device may be released in any suitable way, either automatically or manually, as for example, a manual releasing lever such as 53 may be mounted on the shaft door so as to swing' about the pivot when operated by the handle 51. The upper slotted end of this lever may engage a suitable pin 61` on the releasing bolt 5st which may as indicated be mounted in the guides or brackets GO secured to the door in such position as to be substantially in line with the extension 59 of the detent bar which may project through a suitable slot in the locking bolt and extend outside the lock casing. ln this way the releasing lever may force back the releasing extension of the detent so as to release the locking bolt and allow its return under the action of return spring and the opening door, the releasing lever being so arranged that by pulling it in the direction ot the terasse arrow in Fig. 2 the locking bolt is released and the door simultaneously opened by the same movement. lt desired, also, the lock may be released `from outside the shaft door by providing a suitable release key, such as ($3, revolubly mounted on the bracket 64 and ha ving` its end projecting through a suitable slot 65 in the door so as to be engaged by a key or opening device and rotate the releasing arm 58 suliciently to force back thev detent extension 5f) and release the dctent from the bolt in the same manner, thus pro viding an emergency release ofthe parts which is desirable 'lor some purposes.

lt is sometimes desirable to provide an automatic releasing arrangement on the elevator car so that when'the car is in proper cooperation with the door opening the locking device may be automatically released and in some cases it is also ot advantage to `arrange a suitable controller in connection with the operating device of the car as described in said patent. For this purpose the locking device may be 'provided with a suitable releasingmember or contact arm cooperating with a cam or releasing device carried by the ele Yator car 'which may, it' desired, be actuated when the car is stopped at one of the door openings so as to release the lock under these conditions. in illustrative arrangement ojt this character is shown in Figs. l and 2 as comprising the releasing contact arm S3 mounted on the detent bar and having a suitable cam portion coperating with the angulaior cam face on the collar 8l so that when this releasing arm is swung inward against its spring 97 as bv Contact between the'cam Q4 and the roll 27 on this Contact arm the cam action forces the detent bar backward so that the ratchet and detent 'are disengaged and thel roll locki ing device is released.

lt is also desirable to have a suitable control switch or device arranged in connectionv with the door locking` device so that when 'the door is closed the elevator may be operated and not otherwise, and it desired, controlling devices such as described in said patent may be used Jfor this purpose, including the wires ticonnected to the cams or contact members 2+, 25 so that when the caris opposite a door opening the controller circuit through these wires may be normally closed by a. suitable lock or door switch, such as 90, shown in Fig. l. This door switch" or contact lever 9() may be pivoted about the point 91- and may have a suitable insulated contact 92 adjustably or otherwise mounted in the svif'it'ch member in such position as be engaged by the projection or oper-ating` lug on the lateral extension 9st of the locking bolt so that when the locking bolt is depressed at thetime the door is locked this switch moves in the direction of arrows so as to separate the switch conllO tacts 89 andbreak the controllerfcircuit at this point. For this arrangement the controller circuit may comprise the .Wires 45 connected to the releasing contact cam 24 ofconducting metal which is preferably insulated from its cam bracket 34. When in en gagement with the releasing contact arm 83 this contact then supplies electricity therethrough to the flexible connection 87 shown in Fig. 2 to the contact piece 88. The contact lever 90 of the door switch which may be spring-actuated as indicated to normally hold the contacts 89 closed is connected by the flexible electric braid or connector 86 to the release contact arm 84 provided with a similar roll 26 which under these conditions is in electric contact with the corresponding contact cam l25 of similar construction.

A generally similar cushioned bolt locking device is shown in Figs. 3 and 4 as adapted for use in locking an ordinary swinging or other door 98 on which, if desired, the lock casing 28 may be mountedas by the screws 144. This lock casing may be provided with guides to accommodate the locking bolt 66 so that it can have vertical movement together with its projecting locking member 139 which may project through a suitable slot 147 and carry the friction roll'or bushing 141 held in place as by the washer57 and screw 140. This.lockin roll maycooperate with a suitably slotte door catch on the door jamb, the plate 137 secured to the door jamb as by the screws 138 being, if desired, formed with the inclined slot 56 with which this roll coperates. vThe locking bolt and roll are normally heldin raised position as bythe return spring 67 forcing them upward into engagement with a suitable-alining device or screw 152 which determines the upper position of this bolt and roll so that in closing the door the roll enters the slotted catch on the j'amb. The further 4closing movement of the door forces the locking bolt downward against theaction of its return spring 67 and this downward movement is preferably further cushioned by a liquid or other cushioning device which may comprise the locking bar 106 on the bolt carrying the cushioning'plunger 108, 109 in the cylinder 107 containing any suitable liquid v114, such as oil, glycerin, etc. The closing movement of this plunger forces liquidi-' through the restricted throttling passage-113 which is shown as somewhat exaggerated in size for the sake of clear-ness and the regulating screw 112 may be adjusted so ais to still further close this passage to the extent de-. sired and insure the correspondin degree of cushioning action found'most esirable with the particular door and conditions of I use. A return valve, such 'as 111, may be used to promote the quick return of the lock' ing bolt and connected parts so that when the bolt and connected plunger are raisedv the liquid quickly passes into the upper vend 115 v of the return passage and-up past this return valve 111. A l A series of notches may be formed on the locking bolt so as to be engaged in any posisi@ tion by the notched detent 75 which is slid#` ingly mounted in the guideway 124 in-the casing and is secured to the detent bar 118',V having its end 117 engaged by .a detent spring 134 which may xencircle the reduced '15 extension 116 of this detent bar.I This detent thus engages and holds the locking bolt i in its lowered locking position when the door is -entirely or nearly closed and this detent may of course be released in any suit- 43f; able way in connection with a door knob or other device. An illustrative arrangement of this character is indicated as comprising the rack teeth 119 on the detent bar Witn Which coperates the toothed' sector 120 se` fag" cured on the square shank or bar 121 onv which the door knobs 122 may be secured in i the usual way. Thus 'rotation of a door knob manually withdraws 'this detentand allows the' locking bolt to rise and the door 9'0 to open. The detent may, however, be positively held or locked in this holding position indicated in Fig. 3 by suitable devicessuch as the locking lug l125 on the detent bar cooperating, if des1red, with the ivoted lock! 95. ing lever 129 `normally Jforce as by the spring 133 down against the stop I128.' One or more .tumblers or releasing devices 131 may coperate with this locking lever to hold it in its raised locking position shown in 100 Fig. 3 and these releasing devices may be pressed into this position as by the s 'rig' 132 forcing their projecting portionslgpto contact with the' casing. When, howeveiga vices they are forced .laterally towar tact' with the locking lever 129 which there upon falls into dotted position away\ from. theV locking lug so that the detent bar and 'def -v vtent can beonce more released to allow the'l I' door'to open. Of course theturning ofthe key in the other direction when the fis" closed raises the locking lever 129 internasfull line locking 'position and then allows.'` the releasing levers 131 to snap under-it hold the parts in locked position'.

This invention has been described in con; nection with a. number'of illustrative engi bodiments, forms, arrangements, propo tions, materials, connections andl methqda` o eration, to the detailsof-which disclbsn` tlie invention is not of course to be limited, since what is claimed as new and` what 'isdes sired to be'secured y Letters Patent .is sety ...12e-ff -forth in the appended' claims.

the. i stop 126 so that they are moved out of conya .1

with a slot and adapted to be mounted on an elevator door, a cooperating locking bolt having a roll locking member adapted to cooperate with said stop, a lock casing in which said locking bolt is mounted and which is adapted ltobe supported adjacent 'Y a door opening, a ratchet formed on said said lock casing, a release device mounted on 'said door and comprising a' release bolt to cooperate with said detent extension and a release lever to release said detent and to simultaneously open said door.

2. In locking devices for doors, an'angularly arranged catch provided with a Slot,

a cooperating locking bolt having a rolllocking member adapted to cooperate with said slot, a lock ycasing in which said locking bolt is mounted, a ratchet formed on said locking bolt, a stem and cushioning plunger connected to said locking bolt, a cushioning cylinder charged with oily cushioning fluid in which said plungeroperates, a return spring tending to restore said locking bolt to receiving position, an alining device to adjust the receiving position of said bolt with respect to said catch, a' toothed detent cooperating with said' ratchet to hold said bolt in locking position, a detent spring normally forcing said detent against said ratchet, and a release device to release said detent and to simultaneously open said door.;

3. In locking devices for doors, an angularlv arranged catch provided With a slot, a cooperating locking bolt having a locking member adapted to cooperate With said slot, a lock casing in whichv said locking bolt is mounted, a stem and cushioning plunger connected to said locking bolt, a cushioningcylinder charged with cushioning fluid 1n which said plunger operates, a return spring tending to restore said lockingbolt to re- -ceiving' position, an alining device to adjust the receiving position of said bolt with respect to said catch, a detent to hold said bolt in locking position, a detent spring normally forcing said detent against said bolt,

and a release device to release said detent and to simultaneously open said door.

4. In locking devices for doors, an angularly arranged catch provided with a slot, a cooperating locking bolt having a locking member adapted to cooperate with said slot, a cushioning device connected to said locking bolt, a return spring tending to restore said locking bolt to receiving position, and a detent to hold said bolt in locking position.

In locking devices for elevator doors, an angularly arranged door catch provided with a slot and adapted to be mounted on an elevator door, acooperating locking bolt having a locking member adapted to cooperate with said slot and Which is adapted to be supported adjacent a door opening, a ratchet formed on said locking bolt, a cushioning device connected to said locking bolt, a return spring tending to restore said locking bolt to receiving position, anda detent cooperating with said ratchet to hold said bolt in locking position and prevent opening movement of said door from an approximately closed position.

,6. In locking devices for elevator doors1 an angularly arranged door catch provided with a slot and adapted to be mounted on an elevator door, a cooperating :locking bolt yhaving a locking member "adapted to cooperate with said slot afnd'wliich lis adapted to be supported adjacent a door -`vopening, a cushioning return device connected to said locking bolt tending torestore-the/ same to receiving position, a detent tohold said locking bolt in locking position, a releasing contact arm revolubly mounted on said detent, a releasing cam on said detent cooperating with said arm to disengage said detent When said releasing arm is actuatedand a releasing device adapted to be mounted on the elevator and actuate said releasing arm When the elevator comes into cooperation with the door opening.

7. In locking devices for elevator doors, a door catch adapted to be mounted on an elevator door, a cooperating locking member, a detent to hold lsaid locking member in locking position, a releasing contact arm revolubly mounted on said detent, a releasing cam on said detent cooperating with said arm to disengage said detent when said releasing arm is actuated and a releasing device adapted to be mounted on the elevator and actuate said releasing arm when the elevator comes into cooperation with the door' opening.

' 8. In locking devices for doors, a catch providedwith an angularly arranged slot, a

cooperating locking bolt having a locking member adapted to cooperate with said slot, a fluidcushioning device connected to said locking bolt, means connected With said cushioningl device to regulate its cushioning action on the closing of said lockin device, and a detent to hold said bolt in loc ing position.

9. In locking devices' for doors, an angularly arranged catch, a locking member adapted to cooperate with said catch and be moved transversely during the closing movement of the locking device and a detent cooperating with said locking member to hold' the same locked in a number of positions and prevent opening movement after said locking device has moved into approximately closed position.

l0. In locking devices for elevator doors, a slotted angularly arranged catch adapted to be mounted at an angle to the line of travel of the elevator door, a coperating locking member adapted to ooperate with said catch and to enter and be moved transversely by said slot during the closing move- 'ment of the door, a cushioning return device connected to said locking member tendingl to restore the same to receiving position and a v,detent to hold said locking member lockedin a number of positions.

11. In lockingdevices for doors, a slotted angularly arranged catch adapted to be mounted at an angle to the line of travel of `the door, a cooperating locking member adapted to coperate with said catch and to enter and be moved transversely by said slot during the closing movement of the door and a detent to hold said locking member locked in a number of positions.

o l I PATRICK F. FOLEY.'

Witnesses: v

HARRY L. DUNCAN, f Jnssm B. KAY. 

